Why confine your nerdy sloth to your living room, where large robots mime fake guitar and serve you sloppy mixed drinks? Take that zest for the sedentary life with you on the road by having one of your robot ninjas steal this iPhone Rock Band robot from its ingenious creator, Joe Bowers. The Arduino-based device uses ambient light sensors to detect the falling notes and then taps out the music with some conductive foam attached to some squeaky fake fingers. Joe did a fairly detailed write-up, and even uploaded his code, so there's presumably nothing stopping you from actually doing something with your life and building one of these with all that free time you've saved up by hacking your way through all the console-based guitar games. Video is after the break.